/**
 * The MIT License
 *
 * Copyright (c) 2010 Benjamin Klum
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.helgoboss.scala_xml_tree_builder

import java.io.PrintWriter

class PrintProcessor(out: PrintWriter) extends XmlTreeProcessor {
   
    private var level = 0
   
   
    def startTag(name: String, attributes: List[(String, String)]) {
       val sb = new StringBuilder
       sb ++= "<" + name
       addAttributeString(sb, attributes)
       sb ++= ">"
       printContent(sb.toString)
       level +=1
    }
   
   
    def text(content: String) {
       printContent(content)
    }
   
    def endTag(name: String) {
       level -= 1
       printContent("</" + name + ">")
    }
   
    def startEndTag(name: String, attributes: List[(String, String)]) {
       val sb = new StringBuilder
       sb ++= "<" + name
       addAttributeString(sb, attributes)
       sb ++= " />"
       printContent(sb.toString)
    }
   
    private def printContent(text: String) {
       out.println(" " * (level * 4) + text)
    }
   
    private def addAttributeString(sb: StringBuilder, attributes: List[(String, String)]) = {
       for (attribute <- attributes) {
           sb ++= " " + attribute._1 + "=\"" + attribute._2 + "\""
       }   
    }
}

